Name the types of chemical reactions based on the composition and number of reagents and reaction products.

Compound reactions are such reactions as a result of which one complex substance is formed from two or more substances.
Decomposition reactions are such reactions as a result of which several new substances are formed from one complex substance.
Substitution reactions are such reactions as a result of which a new simple and new complex substance is formed from a simple and complex substance.
Metabolic reactions are such reactions as a result of which two new complex substances are formed from two complex substances.

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